...The R-07 was going in the right direction - small, light, unobtrusive - but as we know there’s still some Firmware niggles with it currently. ...

Exactly which firmware niggels are you thinking about?

prob the zipper-sound on volume adjsut, if i had to guesspeople also bemoan the LEDs not being disable-able

I see. Probably not relevant enough to dismiss the R07 in the context of this thread as a stealth recorder. It is my experience that the zipper sound on input adjust is something you only notice when sitting with headphones and playing around with the device in a quiet room as I have never noticed it on any actual recording. The lights can easily be taped over, but as the device will often just live in your pocket controlled by your phone anyway.